Quote Originally Posted by sbihue View Post
Pl. Help

1. Bricked Nuvi 2597 HWID 1582 S/W ver 440
2. Accidentally formated the internal memory while intending to format the SD card
3. Device now just boots into the Garmin screen, no filesyetem access to internl devide memory
4. No, PC does not see the device anymore
5. Downloaded GCD files, ver 440 through 550 from [Only registered and activated users can see links. ]
Ran GarminCure3 and created cure file with ver 440
Applied using updater and got message "updating successful"
The device is NOT detected by the PC. Garmin Express also doesn't see the device either
6. Yes, Garmin driver's are installed (as part of Garmin express)
7. HWID is 1582 (from original GarminDevice.xml)
8. Yes, tried that (Pl. see #5 above)
9. Yes, In preboot mode I can see System (and loading when applying the update using Updater). The screen is stuck at the GARMIN Logo
10. Sorry No, my bad, No NV backup
11. Waiting for your response

Thank you


Update
After reapplying the GarminCyre3 on the manually modified RGN (converted from 440_GCD with hexedits), the PC can now see the Garmin volume (Win 10). The drive is mounted as:
GARMIN (E)
System Volume Information

Garmin Express however can't see the device. Looks like one or more files/folders need to b erestored. Unfortunately, I have none backed up
Firstly you must understand that cure firmware cannot boot. It is designed that way so that Mass Storage Mode can be attained [you've now got that], once you have MSM it's possible to either (i) remove any corrupt files from the internal memory [you have nothing loaded], or (ii) allow a correct re-formatting to be done using [Only registered and activated users can see links. ]. Formatting with Windows built-in tool or even worse in FAT32 using Mac OS/Linux often isn't successful for Garmin devices. It seems you have an old file system backup so you can load that after you format with RMPrepUSB and then restore your backup and finally load original firmware after which it should boot fully. Remove any gupdate.gcd file from your backup before you restore. If it boots correctly GarminExpress will detect it properly and you can update old files and maps as necessary.

Post again if you have furthers difficulty after following the above steps.